CN207641577U - A kind of high loading force medium-speed pulverizer - Google Patents
A kind of high loading force medium-speed pulverizer Download PDFInfo
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- CN207641577U CN207641577U CN201721573380.3U CN201721573380U CN207641577U CN 207641577 U CN207641577 U CN 207641577U CN 201721573380 U CN201721573380 U CN 201721573380U CN 207641577 U CN207641577 U CN 207641577U
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Abstract
A kind of high loading force medium-speed pulverizer, including：Motor, speed reducer, lower frame, middle frame body, separator, mill assembly, grinding roller assembly, pressue device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis, the improvement done are：Under the premise of the maximum load pressure for keeping coal pulverizer, the quantity of grinding roller assembly and hydraulic stroker is changed to four by original three, four grinding rollers equidistantly distribute on mill, grinding roller assembly in roller be sleeved on mill molded line be it is arc-shaped on the basis of use centripetal circular arc bowl-type, i.e. roller set section is changed to circular arc kidney-shaped by wheel the form of the foetus, and the good effect of the utility model is：It improves grinding roller in the unit interval and the circulating ratio of raw coal is reduced to the crushing efficiency of raw coal, improve the output grinding roller assembly of coal pulverizer using the roller set of centripetal circular arc bowl-type.The molded line of millstone sheet matches with mill roll sleeve, reduces the linear velocity difference of mill roll sleeve and millstone sheet, reduces the abrasion of roller set outside left.
Description
Technical field
The utility model belongs to machinery equipment field, and in particular to the coal-fired milling equipment that coal-fired station uses.
Background technology
By motor, speed reducer, lower frame, middle frame body, separator, mill assembly, grinding roller assembly, pressue device, pull rod
The medium-speed pulverizer that mechanism, hydraulic system, slag-draining device, lubricating system, basis are constituted is that the multi-purpose pulverized coal preparation of thermal power plant is set
It is standby.The mill roll sleeve section of the wheeled coal pulverizer of previous middling speed is evenly arranged in wheel the form of the foetus, three grinding rollers on millstone sheet, and grinding roller is fallen
In the mill rail central diameter of millstone sheet, between grinding roller and millstone sheet forming raw coal mills region.When coal pulverizer works, from coal spout
The raw coal fallen is thrown under the rotation of mill on millstone sheet, and grinding roller is fallen on raw coal, in the grinding forces that hydraulic system applies
It mills to raw coal under effect.It is influenced by former coal pulverizer structure size, can not be further continued for significantly improving pulverizer capacity,
It cannot be satisfied demand of the user to output bigger, the smaller coal pulverizer of size；Simultaneously as three hydraulic cylinders are distributed at 120 °
Around lower frame, primary air nozzle position, the position of motor and dreg discharging box position can only be arranged in the centre of 3 hydraulic cylinders,
The coal pulverizer of the structure cannot meet designing institute, and to usually require that the primary air nozzle of coal pulverizer is arranged in 90 ° or 180 ° with motor
Position；In addition, since roller set is external larger with the linear differential of millstone sheet, the abrasion outside mill roll sleeve is increased, is reduced
The service life of component of milling.
Utility model content
The purpose of this utility model is to provide a kind of high loading force medium-speed pulverizer, is used for the preparation of coal dust, overcomes existing
Such coal pulverizer above shortcomings.
The coal pulverizer of the utility model includes：Motor, speed reducer, lower frame, middle frame body, separator, mill assembly, mill
Roller assembly, pressue device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis, the improvement done are：Keep mill
The maximum load pressure of coal machine（Standard is designed as 750kN/m2）Under the premise of, by the quantity of grinding roller assembly and hydraulic stroker
Four are changed to by original three, four grinding rollers equidistantly distribute on mill, and the roller in grinding roller assembly is sleeved on molded line of milling and is
Centripetal circular arc bowl-type, i.e. roller set section is used to be changed to circular arc kidney-shaped by wheel the form of the foetus on the basis of arc-shaped, grinding roller is along mill
Mill rail central diameter rotates on millstone sheet.
In the utility model, the radius of curvature R that centripetal circular arc bowl-type grinding roller sleeve is preferably designed for mill roll sleeve central diameter takes mill
0.7-1.0 times of machine pitch diameter D.
The good effect of the utility model is：Using four grinding roller assembling structures, grinding roller is improved in the unit interval to original
The crushing efficiency of coal reduces the circulating ratio of raw coal, to which the output of coal pulverizer be greatly improved；Meanwhile four grinding roller dresses
It is made into 90 degree to be evenly distributed with, hydraulic cylinder is also distributed on around lower frame for 90 °, is capable of providing more primary air nozzles, motor and row
Slag location arrangements mode meets arrangement requirement of the designing institute to coal pulverizer；New grinding roller assembly uses the roller of centripetal circular arc bowl-type
Set（Roller set mill molded line be it is arc-shaped）, the molded line and mill roll sleeve of millstone sheet match, reduce and grind roll sleeve and millstone sheet
Linear velocity difference, reduce roller set outside left abrasion, improve the service life of easy-abrasion part.When coal pulverizer works
When, the area increase of effectively milling in region of milling between grinding roller and millstone sheet is fallen, makes to fall between mill roll sleeve and millstone sheet
It mills the raw coal quality relative increase in region, the crushing efficiency of raw coal is improved in the unit interval（It is close to improve coal pulverizer crushing efficiency
33%）, to improve the output of coal pulverizer, it is more advantageous to the stabilization of equipment operation.
Description of the drawings
Fig. 1 is the utility model medium-speed pulverizer overall structure figure.
Fig. 2 is that the utility model coal pulverizer is milled component grinding roller position view.
Fig. 3 is the roll sleeve side view in the assembly of the utility model Roller of Coal Grinder.
Fig. 4 is that the utility model grinds roll sleeve central diameter radius of curvature and grinding machine pitch diameter relational graph.
Specific implementation mode
Refering to fig. 1, Fig. 2, the utility model medium-speed pulverizer include motor 1, speed reducer 2, lower frame 3, middle frame body 4,
Separator 5, mill assembly 6, grinding roller assembly 7, pressue device 8, drag link mechanism 9, basis 10, hydraulic system（It is not drawn into）, deslagging
Device（It is not drawn into）, lubricating system（It is not drawn into）.Improvements introduced is：By the hydraulic loaded in grinding roller assembly 7 and pressue device 8
For the quantity of oil cylinder by three in the prior art four be changed in the utility model, four grinding roller assembly 7 are equidistant on mill
From distribution.Grinding roller is rotated along the mill rail central diameter of mill on millstone sheet.
Refering to Fig. 3, Fig. 4, the roller set 7-1 in grinding roller assembly 7 is on the basis of molded line of milling is still arc-shaped using centripetal
Circular arc bowl-type, i.e. roller cover section and are changed to circular arc kidney-shaped by wheel the form of the foetus, and the radius of curvature R of mill roll sleeve central diameter takes grinding machine pitch circle straight
0.7-1.0 times of diameter D.
Claims (2)
1. a kind of high loading force medium-speed pulverizer, including：Motor, speed reducer, lower frame, middle frame body, separator, mill dress
Match, grinding roller assembly, pressue device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis, it is characterized in that：Keep mill
Under the premise of the maximum load pressure of coal machine, the quantity of grinding roller assembly and hydraulic stroker is changed to four by original three
A, four grinding rollers equidistantly distribute on mill, grinding roller assembly in roller be sleeved on mill molded line be it is arc-shaped on the basis of use
Centripetal circular arc bowl-type, i.e. roller cover section and are changed to circular arc kidney-shaped by wheel the form of the foetus, grinding roller along mill mill rail central diameter on millstone sheet
Rotation.
2. according to claim a kind high loading force medium-speed pulverizer, it is characterized in that：Grind the radius of curvature of roll sleeve central diameter
R takes 0.7-1.0 times of grinding machine pitch diameter D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721573380.3U CN207641577U (en) | 2017-11-22 | 2017-11-22 | A kind of high loading force medium-speed pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721573380.3U CN207641577U (en) | 2017-11-22 | 2017-11-22 | A kind of high loading force medium-speed pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207641577U true CN207641577U (en) | 2018-07-24 |
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ID=62890544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721573380.3U Active CN207641577U (en) | 2017-11-22 | 2017-11-22 | A kind of high loading force medium-speed pulverizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN207641577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806943A (en) * | 2017-11-22 | 2019-05-28 | 中国电建集团长春发电设备有限公司 | A kind of high loading force medium-speed pulverizer |
-
2017
- 2017-11-22 CN CN201721573380.3U patent/CN207641577U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806943A (en) * | 2017-11-22 | 2019-05-28 | 中国电建集团长春发电设备有限公司 | A kind of high loading force medium-speed pulverizer |
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